MARBLED WHITE BUTTERFLY. 
193 
a little beyond the middle ; that next the anal angle 
is double. The body is black above, and densely 
clothed, as well as the base of the wings, with yel- 
lowish hairs. Varieties occur in which one of the 
colours occupies greater part of the wing : that in 
which the black predominates has been taken near 
Dover;* in the other, which has been named Leu- 
coinelas, the secondary wings are entirely white be- 
neath. 
The caterpillar is yellowish-green, with a dark 
line along the back, and another on each side. The 
head is reddish-brown, and there are two small spines 
of the same colour on the hinder extremity. It is 
found in May on the Timothy grass ( Phleum pra- 
tcnse ). 
This pretty butterfly is regarded as very local, 
but its localities are pretty widely scattered over 
the south of England. It is usually found in moist 
glades, or in bogs and marshy ground, but some- 
times frequents places of a very different description. 
The following are a few of the stations in which it 
has been observed in greatest plenty. Near Dover, 
Teignmouth, woods at Baylham Hall, Ipswich, Da- 
renth Wood, &c. It is likewise abundant near 
York, which is probably its most northern residence, 
as it is not known to occur in Scotland. 
• This variety is figured by Esper ( die Schmtterlinge, 
tab. iii, fig. 4), and a similar one is represented in Loudon’s 
Slag. Nat. Hist. v. 335, 
